c++ - how to draw polygons in OpenGL that have an outline drawn with a black pen and another fill color - Stack Overflow

How can I draw a shape like this in OpenGL? I mean, I know how to draw polygons in OpenGL. I want to know how to make the outline black and the fill color ( for example ) yellow?

c++ - Drawing a colored grid with OpenGL? - Stack Overflow

Draw a sphere - Rosetta Code

ROOTUsersGuide

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3D Graphics with OpenGL by Examples

boost - C++ polygon drawing on console Linux - Stack Overflow

drawpoly() function in C - GeeksforGeeks

c++ - How to draw a polygon on specific pixel colors only? - Stack Overflow

OpenGL - Drawing polygons